Abstract

Data center (DC) infrastructures are a key element for nowadays Internet and cloud services. However, due to the increase of traffic that DCs have to manage, optical-based network architectures are being investigated to overcome the limitations of nowadays electronic-based intra-DC network (DCN) architectures. In this regard, it becomes imperative to coordinate the allocation of very heterogeneous resources (IT and optical network) for the efficient provisioning of services inside the DC.
Such process is known as orchestration and allows the DC administrator to optimize the utilization of his physical
infrastructure. In fact, resource orchestration has gained the
interest of the industry and several software flavors have emerged
to perform such operation. As a case of study, in this paper we
focus on the provisioning of Virtual DC (VDC) instances belonging
to different tenants over a shared DC infrastructure with optical
DCN. To this end, an architecture for the orchestration and
control of optically interconnected DCs in aims of efficient VDC
provisioning is presented. The proposed solution is based on
OpenStack for the orchestration and the concept of Software
Defined Networking (SDN) for the control aspect of the network.
To highlight the benefits of an orchestrated approach to DC
resource management, several tests are performed, considering
both static and dynamic VDC provisioning. The obtained results
confirm the potential benefits of resource orchestration in DCs.